ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Core Namespace / CustomItemBase Class / Delete Method

Delete Method (CustomItemBase)
Override to implement any custom logic for delete of your item.
Syntax
public virtual void Delete()
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.4 or higher.
See Also